Sharp CDBA-2600-H Service manual

CD-BA250H/CD-BA2600H

SERVICE MANUAL

No. S4126CDBA250H

MINI COMPONENT SYSTEM

MODEL CD-BA250H

CD-BA250H Mini Component System consisting of

CD-BA250H (main unit) and CP-BA250H (speaker system).

MINI COMPONENT SYSTEM

MODEL CD-BA2600H

CD-BA2600H Mini Component System consisting of CD-BA2600H (main unit) and CP-BA2600H (speaker system).

•Note for users in U.K.

Recording and playback of any material may require consent which SHARP is unable to give. Please refer particularly to the provisions of Copyright Act 1956, the Dramatic and Musical Performers Protection Act 1956, the Performers Protection Acts 1963 and 1972 and to any subsequent statutory enactments and orders.

•In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified be used.

CONTENTS
	Page
SAFETY PRECAUTION FOR SERVICE MANUAL ...........................................................................................................	2
IMPORTANT SERVICE NOTES (CD-BA250H FOR U.K. ONLY) ..............................................................................	....... 3
SPECIFICATIONS .............................................................................................................................................................	3
NAMES OF PARTS ...........................................................................................................................................................	4
OPERATION MANUAL ......................................................................................................................................................	6
DISASSEMBLY ................................................................................................................................................................	11
REMOVING AND REINSTALLING THE MAIN PARTS ...................................................................................................	14
ADJUSTMENT .................................................................................................................................................................	15
BLOCK DIAGRAM ...........................................................................................................................................................	19
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD ..............................................................................................	22
VOLTAGE ........................................................................................................................................................................	38
NOTES ON SCHEMATIC DIAGRAM ..............................................................................................................................	39
TYPES OF TRANSISTOR AND LED ................................................................................................................................	39
WAVEFORMS OF CD CIRCUIT ......................................................................................................................................	40
TROUBLESHOOTING .....................................................................................................................................................	41
FUNCTION TABLE OF IC ................................................................................................................................................	45
FL DISPLAY ......................................................................................................................................................................	51
WIRING OF PRIMARILY SUPPLY LEADS (CD-BA250H FOR U.K. ONLY) ....................................................................	52
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING METHOD (CD-BA250H FOR U.K. ONLY)

This document has been published to be used

SHARP CORPORATION– 1 –	for after sales service only.
	The contents are subject to change without notice.

CD-BA250H/CD-BA2600H

SAFETY PRECAUTION FOR

SERVICE MANUAL

Precaution to be taken when replacing and servicing the Laser Pickup.

The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class 1 Requirements. However, the following precautions must be observed during servicing to protect your eyes against exposure to the Laser beam.

(1)When the cabinet has been removed, the power is turned on without a compact disc, and the Pickup is on a position outer than the lead-in position, the Laser will light for several seconds to detect a disc. Do not look into the Pickup Lens.

(2)The Laser Power Output of the Pickup inside the unit and replacement service parts have already been adjusted prior to shipping.

(3)No adjustment to the Laser Power should be attempted when replacing or servicing the Pickup.

(4)Under no circumstances look directly into the Pickup Lens at any time.

(5)CAUTION - Use of controls or adjustments, or performance of procedures other than those specified herein may result in hazardous radiation exposure.

Laser Diode Properties

Material: GaAIAs

Wavelength: 780 nm

Emission Duration: continuous

Laser Output: max. 0.6 mW

CAUTION-INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO

BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.

VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD. STIRRA

EJ IN I STRALEN OCH BETRAKTA EJ STRALEN MED OPTISKA INSTRUMENT.

ADVERSEL-USYNLIG LASERSTRALING VED ABNING. SE IKKE IND I

STRALEN-HELLER IKKE MED OPTISKE INSTRUMENTER.

VARO! AVATTAESSA OLET ALTTIINA NAKYMATON LASERSATEILYLLE.

ALA TUIJOTA SATEESEEN ALAKA KATSO SITA OPTISEN LAITTEEN LAPI.

VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD.

STIRRA EJ IN I STRALEN OCH BETRAKTA EJ STRALEN GENOM OPTISKT

INSTRUMENT.

ADVERSEL-USYNLIG LASERSTRALING NAR DEKSEL APNES. STIRR IKKE

INN I STRALEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.

VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN TÄSSÄ KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA ALTISTAA KÄYTTÄJÄN TURVALLISUUSLUOKAN 1 YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.

VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT ÄN I DENNA BRUKSANVISNING SPECIFICERAS. KAN ANVÄNDAREN UTSÄTTAS FÖR OSYNLIG LASERSTRÅLNING, SOM ÖVERSKRIDER GRÄNSEN FÖR LASERKLASS 1.

(CD-BA250H for U.K. only)		(Except for U.K.)

– 2 –

			CD-BA250H/CD-BA2600H
	IMPORTANT SERVICE NOTES (CD-BA250H FOR U.K. ONLY)
	Before returning the unit to the customer after completion of a		WITHSTANDING
			VOLTAGE TESTER
	repair or adjustment it is necessary for the following withstand		+	PROBE
	voltage test to be applied to ensure the unit is safe for the
			AC
	customer to use.
			OUT
	Setting of Withstanding Voltage Tester and set.
			-
	Set name	set value		UNIT
	Withstanding Voltage Tester		SHORT-CIRCUIT	CONNECT THE PROBE
	Test voltage	4,240 VPEAK	AC POWER	TO GND OF CHASSIS
			SUPPLY CORD	SCREW
		3,000 VRMS
	Set time	6 secs
	Set current (Cutoff current)	4 mA
	Unit
	Judgment

OK: The “GOOD” lamp lights.

NG: The “NG” lamp lights and the buzzer sounds.

CHASSIS SCREW

SPECIFICATIONS

CD-BA250H/CD-BA2600H

General

Power source	AC 230 V, 50 Hz
Power consumption	Power on: 124 W
	Power stand-by: 0.6 W (*)
Dimensions	Width: 270 mm (10-5/8")
	Height: 330 mm (13")
	Depth: 340 mm (13-3/8")
Weight	6.7 kg (14.7 lbs.)

( * ) This power consumption value is obtained when the demonstration mode is cancelled in the power stand-by mode. cancel the demonstration mode.

Amplifier (CD-BA250H for U.K.)

Output power	RMS: 150 W (75 W + 75 W) (10 % T.H.D.)
	RMS: 104 W (52 W + 52 W) (0.9 % T.H.D.)
Output terminals	Speakers: 6 ohms
	Headphones: 16 - 50 ohms (recommended: 32 ohms)
Input terminals	Video/Auxiliary (audio signal): 500 mV/47 kohms

Amplifier (Except for U.K.)

Output power	PMPO: 480 W
	MPO: 240 W (120 W + 120 W) (DIN 45 324)
	RMS: 150 W (75 W + 75 W) (DIN 45 324)
	RMS: 104 W (52 W + 52 W) (DIN 45 500)
Output terminals	Speakers: 6 ohms
	Headphones: 16 - 50 ohms (recommended: 32 ohms)
Input terminals	Video/Auxiliary (audio signal): 500 mV/47 kohms

CD player

Type	3-disc multi-play compact disc player
Signal readout	Non-contact, 3-beam semiconductor laser pickup
D/A converter	1-bit D/A converter
Frequency response	20 - 20,000 Hz
Dynamic range	90 dB (1 kHz)

Tuner

Frequency range	FM: 87.5 - 108 MHz
	AM: 522 - 1,620 kHz

Cassette deck (CD-BA250H for U.K.)

Frequency response	50 - 14,000 Hz (Normal tape)
Signal/noise ratio	55 dB (TAPE 1, playback)
	50 dB (TAPE 2, recording/playback)
Wow and flutter	0.3 % (WRMS)

Cassette deck (Except for U.K.)

Frequency response 50 - 14,000 Hz (Normal tape)

Signal/noise ratio 55 dB (TAPE 1, playback)

50 dB (TAPE 2, recording/playback)

Wow and flutter 0.35 % (DIN 45 511)

CP-BA250H/CP-BA2600H

Type	2-way type speaker system
	5 cm (2") Tweeter
	13 cm (5-1/4") Woofer
Maximum input power	150 W
Rated input power	75 W
Impedance	6 ohms
Dimensions	Width: 220 mm (8-11/16")
	Height: 330 mm (13")
	Depth: 217 mm (8-9/16")
Weight	3.0 kg (6.6 lbs.)/each

Specifications for this model are subject to change without prior notice.

– 3 –

CD-BA250H/CD-BA2600H

NAMES OF PARTS

CD-BA250H/CD-BA2600H

Front panel

1.Disc Tray

2.Timer Set Indicator

3.On/Stand-by Button

4.Tape 2 Cassette Compartment

5.Tape 1 Cassette Compartment

6.Equalizer Mode Select Button

7.Volume Up and Down Buttons

8.Extra Bass/Demo Mode Button

9.Disc Tray Open/Close Button 10. Disc Skip Button

11. Tuning and Time Up Button

12. CD or Tape Stop Button

13. CD Button

14. RDS Programme Type/Traffic Information Search Button

15. RDS EON Button

16. RDS ASPM (Auto Station Programme Memory) Button

17. Dimmer Button

18. Clock Button

19. Timer/Sleep Button

20. Headphone Socket

21. RDS Display Mode Selector Button

22. Video/Auxiliary Button

23. Tape (12) Button

24. Tuner (Band) Button

25. CD Play or Repeat, Tape Play Button

26. CD Track Up or Fast Forward, Tape 2 Fast Forward, Tuner Preset Up Button

27. Tuning and Time Down Button

28. Memory/Set Button

29. Tape 2 Record Pause Button

30. CD Track Down or Fast Reverse, Tape 2 Rewind, Tuner Preset Down Button

6	7	8	9
			10

1

2

3

4

5

11 12 13		14 15 16
			21
17			22
			23
18
			24
19			25
20			26
27	28	29	30

Display

1.RDS Indicator

2.Programme Type Indicator

3.Traffic Announcement Indicator

4.Extra Bass Indicator

5.FM Stereo Mode Indicator

6.Traffic Information Indicator

7.Traffic Programme Indicator

8.CD Play Indicator

9.FM Stereo Receiving Indicator 10. Dynamic PTY Indicator

11. EON Indicator

12. CD Repeat Play Indicator

13. CD Pause Indicator

14. Disc Number Indicators

15. Timer Play Indicator

16. Timer Recording Indicator

17. Tape 2 Record Indicator

18. Memory Indicator

19. Tape Play Indicator

20. Sleep Indicator

21. Spectrum Analyser/Volume Level Indicator

1	2	3		14
4		6
				15
5		7	17 18 19	16
9 10 11 12	13	8		20
			21

21

21

– 4 –

CD-BA250H/CD-BA2600H

Rear panel

1.FM 75 Ohms Aerial Sock

2.AM Loop Aerial Socket

3.Video/Auxiliary (Audio Signal) Input Sockets

4.Speaker Terminals

5.AC Power Lead

Remote control

1.Remote Control Transmitter

2.Disc Number Select Buttons

3.CD Pause Button

4.CD Memory Button

5.CD Track Down or Fast Reverse Button

6.CD Clear Button

7.Tape 1 Play Button

8.Tape 1/Tape 2 Stop Button

9.Equalizer Mode Select Button

10.Tape 2 Record Pause Button

11.CD Button

12.Tuner (Band) Button

13.On/Stand-by Button

14.Extra Bass Button

15.CD Stop Button

16.CD Play or Repeat Button

17.CD Track Up or Fast Forward Button

18.CD Random Button

19.Tuner Preset Up and Down Buttons

20.Tape 2 Play Button

21.Tape 2 Rewind Button

22.Tape 2 Fast Forward Button

23.Video/Auxiliary Button

24.Tape (1 2) Button

25.Volume Up and Down Buttons

CD-BA250H/CD-BA2600H

1

2 3

4

5

	1
	2	15
	3	16
	4	17
	5
		18
	6
		19
	7	20
		21
	8	22
		23
	9
	10	24
	11
	12	25
	13
	14

Buttons with "" mark in the illustration can be operated on the remote control only.

Other buttons can be operated both on the main unit and the remote control.

– 5 –

CD-BA250H/CD-BA2600H

CP-BA250H/CP-BA2600H

Speaker system

1. Tweeter		1
2. Woofer
3.	Bass Reflex Duct
4.	Speaker Wire

	2
3	3
	4

OPERATION MANUAL

Setting the Clock

In this example, the clock is set for the 24-hour (0:00) display.

1 Press the ON/STAND-BY button to turn the power on.

2 Press the CLOCK button and within 5 seconds, press the MEMORY/SET button.

3 Press the TUNING/TIME (or ) button to select 24-hour or 12hour display and then press the MEMORY/SET button.

"0:00"			The 24-hour display will appear.
		(0:00 - 23:59)
"AM 12:00"			The 12-hour display will appear.
			(AM 12:00 - PM 11:59)
"AM 0:00"			The 12-hour display will appear.
			(AM 0:00 - PM 11:59)

Note that this can only be set when the unit is first installed or it has been reset. (Refer to step 3 under "If trouble occurs")

4 Press the TUNING/TIME (or ) button to adjust the hour and then press the MEMORY/SET button.

Press the TUNING/TIME (or ) button once to advance the time by 1 hour. Holdit down to advance continuously.

When the 12-hour display is selected, "AM" will change automatically to "PM".

5 Press the TUNING/TIME (or ) button to adjust the minutes and then press the MEMORY/SET button.

Press the TUNING/TIME (or ) button once to advance the time by 1 minute. Hold it down to change the time in 5-minute intervals.

The hour will not advance even if minutes advance from "59" to "00".

The clock begins counting from "0" seconds. (Seconds are not displayed.) The time display will disappear after a few seconds.

To confirm the time display:

Press the CLOCK button.

The time display will appear for about 5 seconds.

Note:

The "CLOCK" or time will flash at the push of the CLOCK button when the AC power supply is restored after a power failure or unplugging the unit.

Readjust the clock as follows.

To readjust the clock:

Perform "Setting the Clock" from the beginning. If the time display is flashing, step 3 (for selecting the 24-hour or 12-hour display) will be skipped.

To change the 24-hour or 12-hour display:

1Clear all the programmed contents. [Perform to step 3 under "If trouble occurs"

2Perform "Setting the Clock" from the beginning.

– 6 –

CD-BA250H/CD-BA2600H

Troubleshooting Chart

Many potential "problems" can be resolved by the owner without calling a service technician.

If something is wrong with this product, check the following before calling your authorised SHARP dealer or service centre.

General

Symptom	Possible cause
The clock is not on time.	Did a power failure occur? Reset the
	clock.
When a button is pressed, the unit	Set this unit to the power stand-by mode
does not respond.	and then turn it back on.
	If the unit still malfunctions, reset it. Refer
	to step 3 under "If trouble occurs"
No sound is heard.	Is the volume level set to "0"?
	Are the headphones connected?
	Are the speaker wires disconnected?

Cassette deck

		Symptom	Possible cause
		Cannot record.	Is the erase-prevention tab removed?
		Cannot record tracks with proper	Is it a normal tape? (You cannot record on
		sound quality.	ametal or CrO		tape.)
		Cannot erase completely.
		Sound skipping.	Is there any slack?
			Is the tape stretched?
		Cannot hear treble.	Are the capstans, pinch rollers, or heads
		Sound fluctuation.	dirty?
		Cannot remove the tape.	If a power failure occurs during playback,
			the heads remain engaged with the tape.
			Do not open the compartment forcibly.
			Wait until electricity resumes.
		Remote control

CD player

Symptom	Possible cause
Playback does not start.	Is the disc loaded upside down?
Playback stops in the middle or is	Does the disc satisfy the standards?
not performed properly.	Is the disc distorted or scratched?
Playback sounds are skipped, or	Is the unit located near excessive vibra-
stopped in the middle of a track.	tions?
	Is the disc very dirty?
	Has condensation formed inside the unit?

Tuner

Symptom	Possible cause
Radio makes unusual noise con-	Is the unit placed near the TV or compu-
secutively.	ter?
	Is the FM aerial or AM loop aerial placed
	properly? Move the AC power lead away
	from the aerial if located near.

Symptom	Possible cause
The remote control does not oper-	Is the AC power lead of the unit plugged
ate.	in?
	Is the battery polarity respected?
	Are the batteries dead?
	Is the distance or angle incorrect?
	Does the remote control sensor receive
	strong light?

Condensation

Sudden temperature changes, storage or operation in an extremely humid environment may

cause condensation inside the cabinet (CD pick- up, tape heads, etc.) or on the transmitter on the remote control. Condensation can cause the unit to malfunction.

If this happens, leave the power on with no disc (or cassette) in the unit until normal playback is possible (about 1 hour). Wipe off any condensa-

tion on the transmitter with a soft cloth before operating the unit.

Troubleshooting Chart

If trouble occurs

When this product is subjected to strong external interference (mechanical shock, excessive static electricity, abnormal supply voltage due to lightning, etc.) or if it is operated incorrectly, it may malfunction.

If such a problem occurs, do the following:

1Set the unit to the stand-by mode and turn the power on again.

2If the unit is not restored in step 1, unplug and plug in the unit, and then turn the power on.

3If neither step 1 nor 2 restores the unit, do the following:

Press the ON/STAND-BY button to enter the power stand-by mode.

Whilst pressing down the/button and the X-BASS/DEMO button, press the ON/STAND-BY button until "CLEAR AL" appears.

Caution:

This operation will erase all data stored in memory including clock, timer settings, tuner preset, and CD programme.

Before transporting the unit

1Press the ON/STAND-BY button to turn the power on.

2Press the CD button.

3Press theOPEN/CLOSE button to open the disc tray.

Remove all CDs inserted in the unit.

4Press theOPEN/CLOSE button to close the disc tray.

Make sure that "NO DISC" is displayed.

5Press the ON/STAND-BY button to enter the stand-by mode, and then unplug the AC power lead from the AC socket.

Remote Control

Test of the remote control

Face the remote control directly to the remote sensor on the unit.

The remote control can be used within the range shown below:

Press the ON/STAND-BY button. Does the power turn on? Now, you can enjoy the music.

Remote sensor

0.2 m - 6 m (8" - 20')

– 7 –

1 Accessories

Remote control × 1

AM loop antenna× 1

FM antenna × 1

2 Battery installation of remote control

	Use 2 “AA” size batteries (UM/SUM-3, R6, HP-7 or similar).										Batteries are not included.
8 –	1 Remove the	2 Insert the batteries									3 Replace the cover.
–	battery cover.		as shown.

3 System connections				-CD
Right speaker	Left speaker			-BA250H/CD
		FM antenna		BA2600H
Red	Black		AM loop antenna

Left speaker

Right speaker

TV

RCA lead (not supplied)

Wall socket

(AC 230 V, 50 Hz)

To the line

(For U. K.)

output sockets

VCR, DVD, etc.

Wall socket (AC 230 V, 50 Hz) (Except for U. K.)

– 9 –

4 Turn on your system

The first time the unit is plugged,	1	Press the
the unit will enter the demonstra-
tion mode. You will see words		X-BASS/DEMO button
		to cancel the demon-
scroll.
		stration mode.

Listening to a CD (CDs)

2 Press the ON/ STAND-BY button to turn the power on.

12 cm (5”)

8 cm (3”)

1

2

3

4

5

6

Press the CD button.

Press the OPEN/CLOSE button to open the disc tray.

Place the CD(s) on the disc tray, label side up.

When loading a third disc, press the DISC SKIP button to turn the disc tray, then place the CD in the open position.

Press the OPEN/CLOSE button to close the disc tray.

To select the CD you want to listen to first, press one of 1 - 3 buttons on the remote control.

Press the button to start playback.

Listening to the radio

1

2

FM stereo mode indicator

FM stereo receiving indicator

Press the TUNER (BAND) button repeatedly to select the desired frequency band (FM or AM).

Press the TUNING/TIME ( or ) button to tune in to the desired station. When the TUNING/TIME button is pressed for more than 0.5 seconds, scanning will start automatically and the tuner will stop at the first receivable broadcast station.

To receive an FM stereo transmission:

Press the TUNER (BAND) button to display the “ST” indicator.

●“ ” will appear when an FM broadcast is in stereo.

Listening to a cassette tape (TAPE 1 or TAPE 2)

1	Open the cassette door by pushing the
	area marked “ PUSH EJECT”.

Load a cassette into the TAPE 1 or TAPE 2 2 cassette compartment with the side to

be played facing toward you.

3	Press the TAPE (1 2) button to select
	the cassette you want to listen to.
4	Press the	button to start playback.

TAPE 1

TAPE 2

■ If trouble occurs

When this product is subjected to strong external interference (mechanical shock, excessive static electricity, abnormal supply voltage due to lightning, etc.) or if it is operated incorrectly, it may malfunction.

If such a problem occurs, do the following:

1.Set the unit to the stand-by mode and turn the power on again.

2.If the unit is not restored in step 1, unplug and plug in the unit, and then turn the power on.

3.If neither step 1 nor 2 restores the unit, do the following:

Press the ON/STAND-BY button to enter the power

stand-by mode.

Whilst pressing down the button and the X-BASS/ DEMO button, press the ON/STAND-BY button until “CLEAR AL” appears.

■Maintenance

●Dirty heads, capstans or pinch rollers can cause poor sound and tape jams. Clean these parts with a cotton swab moistened with commercial head/pinch roller cleaner or isopropyl alcohol.

●When cleaning the heads, pinch rollers, etc., unplug the unit which contains high voltages.

●After long use, the deck’s heads and capstans may become magnetised, causing poor sound. Demagenetise these parts once every 30 hours of playing/recording time by using a commercial tape head demagnetiser. Read the demagnetiser’s instructions carefully before use.

●Clean the dust or stain on the CD pickup lens using a commercial cleaning disc (brush type).

A Playback head

B Capstan

C Pinch roller

D Erase head

E Recording/Playback head

		A	B	C
TAPE 1
TAPE 2	D	E B		C

BA2600H-BA250H/CD-CD

CD-BA250H/CD-BA2600H

Using the Radio Data System (RDS)

RDS is a broadcasting service which a growing number of FM stations provide. These FM stations send additional signals along with their regular programme signals. They send their station names, and information about the type of programme such as sports or music, etc.

When tuned to an RDS station, "RDS" and the station name will be displayed.

"TP" (Traffic Programme) will appear on the display when the received broadcast carries traffic information, and "TA" (Traffic Announcement) will appear whilst a traffic information is on air.

"EON" will appear whilst the EON (Enhanced Other Networks information) data is broadcast.

"PTYI" (Dynamic PTY Indicator) will appear whilst the Dynamic PTY station is received.

"RT" (Radio Text) will appear whilst the unit receives the Radio text data. "CT" (Clock Time) will appear whilst the unit receives the RDS CT data.

You can control the RDS by using the buttons on the main unit only.

Information provided by RDS

Each time the DISPLAY MODE button is pressed, the display will switch as follows:

Station name (PS)

Frequency

Programme type (PTY)	RDS clock time
(8 Languages)	Date (for 3 seconds)

Programme type (PTY)	Clock-time and date (CT)
(English fixed)

Radio text (RT)

When you are tuning in to a station other than an RDS station or to an RDS station which sends weak signal, the display will change in the following order:

NO PS	NO PTY	NO RT
FM	98.80 MHz	NO CT

Descriptions of the PTY (Programme Type) codes, TP (Traffic Programme) and TA (Traffic Announcement).

You can search for and receive the following PTY, TP and TA signals.

NEWS	Short accounts of facts, events and publicly expressed views, reportage
	and actuality.
AFFAIRS	Topical programme expanding or enlarging upon the news, generally in
	different presentation style or concept, including debate, or analysis.
INFO	Programmes whose purpose is to impart advice in the widest sense.
SPORT	Programme concerned with any aspect of sport.
EDUCATE	Programme intended primarily to educate, of which the formal ele-
	ment is fundamental.
DRAMA	All radio plays and serials.
CULTURE	Programmes concerned with any aspect of national or regional cul-
	ture, including language, theatre, etc.
SCIENCE	Programmes about the natural sciences and technology.
VARIED	Used for mainly speech-based programmes usually of light-entertain-
	ment nature, not covered by other categories. Examples include:
	quizzes, panel games, personality interviews.
POP M	Commercial music, which would generally be considered to be of cur-
	rent popular appeal, often featuring in current or recent record sales
	charts.
ROCK M	Contemporary modern music, usually written and performed by
	young musicians.
EASY M	Current contemporary music considered to be "easy-listening", as op-
	posed to Pop, Rock or Classical, or one of the specialised music
	styles, Jazz, Folk or Country. Music in this category is often but not
	always, vocal, and usually of short duration.
LIGHT M	Classical music for general, rather than specialist appreciation. Ex-
	amples of music in this category are instrumental music, and vocal or
	choral works.
CLASSICS	Performances of major orchestral works, symphonies, chamber mu-
	sic, etc., and including Grand Opera.
OTHER M	Musical styles not fitting into any of the other categories. Particularly
	used for specialist music of which Rhythm & Blues and Reggae are
	examples.
WEATHER	Weather reports and forecasts and meteorological information.
FINANCE	Stock Market reports, commerce, trading, etc.
CHILDREN	For programmes targeted at a young audience, primarily for entertain-
	ment and interest, rather than where the objective is to educate.

SOCIAL	Programmes about people and things that influence them individually
	or in groups. Includes: sociology, history, geography, psychology and
	society.
RELIGION	Any aspect of beliefs and faiths, involving a God or Gods, the nature
	of existence and ethics.
PHONE IN	Involving members of the public expressing their views either by
	phone or at a public forum.
TRAVEL	Features and programmes concerned with travel to near and far des-
	tinations, package tours and travel ideas and opportunities. Not for
	use for announcements about problems, delays, or roadworks affect-
	ing immediate travel where TP/TA should be used.
LEISURE	Programmes concerned with recreational activities in which the listen-
	er might participate. Examples include, Gardening, Fishing, Antique
	collecting, Cooking, Food & Wine, etc.
JAZZ	Polyphonic, syncopated music characterised by improvisation.
COUNTRY	Songs which originate from, or continue the musical tradition of the
	American Southern States. Characterised by a straightforward melo-
	dy and narrative story line.
NATION M	Current Popular Music of the Nation or Region in that country's lan-
	guage, as opposed to International 'Pop' which is usually US or UK
	inspired and in English.
OLDIES	Music from the so-called "golden age" of popular music.
FOLK M	Music which has its roots in the musical culture of a particular nation,
	usually played on acoustic instruments. The narrative or story may be
	based on historical events or people.
DOCU-	Programme concerned with factual matters, presented in an investi-
MENT	gative style.
TEST	Broadcast when testing emergency broadcast equipment or receiv-
	ers.
ALARM !	Emergency announcement made under exceptional circumstances to
	give warning of events causing danger of a general nature.
NONE	No programme type (receive only).
TP	Broadcasts which carry traffic announcements.
TA	Traffic announcements are being broadcast.

Note:

When you select a programme in the EON stand-by mode, the unit will display "TI" instead of "TA".

– 10 –

CD-BA250H/CD-BA2600H

DISASSEMBLY

Caution on Disassembly

Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance:

1.Take cassette tape and compact disc out of the unit.

2.Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit.

3.Take off nylon bands or wire holders where they need to be removed when disassembling the unit. After servicing the unit, be sure to rearrange the leads where they were before disassembling.

4.Take sufficient care on static electricity of integrated circuits and other circuits when servicing.

CD-BA250H/CD-BA2600H

STEP	REMOVAL		PROCEDURE						FIGURE
1	Top Cabinet	1.	Screw ......................	(A1) x4					11-1
2	Side Panel	1.	Screw ......................	(B1) x8					11-1
	(Left/Right)
3	CD Player Unit/	1.	Turn on the power supply,						11-2
					..
	CD Tray Cover
			open the disc tray, take out
			the CD tray cover, and close.
			(Note 1)
		2.	Screw ......................	(C1) x1
		3.	Hook ........................	(C2) x3
		4.	Hook ........................	(C3) x2
		5.	Socket .....................	(C4) x2
4	Rear Panel with	1.	Screw ....................	(D1) x10					11-2
	Fan Motor	2.	Socket .....................	(D2) x1
5	Main PWB	1.	Screw ......................	(E1) x3					11-2,12-2
		2.	Socket .....................	(E2) x3
		3.	Flat Cable ...............	(E3) x1
		4.	Flat Wire ..................	(E4) x1
6	Front Panel	1.	Screw .......................	(F1) x2					12-2
7	Display PWB	1.	Screw ....................	(G1) x12					12-3
		2.	Flat Cable ...............	(G2) x1
8	Tape Mechanism	1.	Open the cassette holder						12-3
						..
		2.	......................Screw	(H1)		x5
9	Headphones PWB	1.	Screw .......................	(J1) x1					12-3
10	Turntable	1.	Hook ........................	(K1) x2					12-4
		2.	Cover ......................	(K2) x1
11	Disc Tray	1.	Turn fully the lock	lever in the					11-3
			arrow direction.
		2.	While holding the lock lever,rotate						12-1
			the cam gear until the cam gear
			rib engages with the clamp lever.
		3.	Push the slide chassis backward to						12-5
			engage the claw with the groove
			and remove it in the direction
			of the arrow. ...............	(L1) x6
12	CD Servo PWB	1.	Screw ......................	(M1) x1					12-6
	(Note 2)	2.	Hook ........................	(M2) x2
		3.	Socket .....................	(M3) x4
13	CD Mechanism	1.	Hook ........................	(N1) x2					13-1
		2.	Hook ........................	(N2) x3

Note 1: How to open the changer manually. (Fig. 11-3)

1.In this state, turn fully the lock lever in the arrow direction through the hole on the loading chassis bottom.

2.While holding the lock lever, rotate the cam gear anticlockwise until the cam gear rib engages with the clamp lever. (Fig. 12-1)

3.After that, push forward the CD slide chassis.

Note 2:

1. After removing the connector for the optical pickup from the connector, wrap the conductive aluminium foil around the front end of the connector so as to protect the optical pickup from electrostatic damage.

CD-BA250H/CD-BA2600H

(A1) x 2

ø3 x 12mm	Top Cabinet

Side Panel (Right)

(B1) x 2
ø3 x 10mm				(A1) x 2
				ø3 x 12mm
				Side Panel
				(Left)
(B1) x 4				(B1) x 2
ø3 x 10mm
				ø3 x 10mm
	Rear
	Panel
			Figure 11-1
	CD Servo			CD Tray Cover
	PWB
		(C4) x 2		(C2) x 3
				1
(C3) x 1
Pull				1
				2
				CD Player
Rear				Unit
Panel				(C3) x 1
(C1) x 1
ø3 x 10mm
				(E1) x 1
				ø3 x 10mm
(D2) x 1				Lug Wire
			Main PWB	(D1) x 2
(D1) x 8				ø3 x 10mm
ø3 x 10mm			Figure 11-2

Lock Lever

CD Player Unit

(Bottom View)

Figure 11-3

Note 3:

1.Be careful not to break the claw of the CD mechanism.

2.When fining back the cam gear assembly, let it lock by front movement.

– 11 –

CD-BA250H/CD-BA2600H

(K2) x 1

Clamp Lever

Turntable

CD Player Unit

(Top View)

Cam Gear Rib

Slide

Chassis

(K1) x 2

Figure 12-1

(E2) x 2

(E4) x 1

Headphones (E1) x 2 PWB

ø3 x 10mm

Power PWB

(E3) x 1

(E2) x 1

Front Panel

Transformer

PWB

2

(F1) x 2 1

ø3 x 8mm

Main PWB

Figure 12-2

(G2) x 1

		Front Panel
		Display PWB
	(G1) x 12	(M1) x 1
	ø3 x 10mm
		ø3 x 8mm
	Tape	(M3) x 2
	Mechanism
		(M2) x 2
	(H1) x 5	Open
	ø3 x 10mm
		Cassette
		Holder

(J1) x 1

ø3 x 10mm

Lug Wire

(M3) x 2

Headphones

PWB

Figure 12-3

– 12 –

CD Player Unit

Figure 12-4

(L1) x 3

3

(L1) x 3

Figure 12-5

	CD Servo	Slide
		Chassis
	PWB

Figure 12-6

CD	(N2) x 3
Mechanism

(N1) x 1

(N1) x 1

Figure 13-1

CP-BA250H/CP-BA2600H

STEP	REMOVAL		PROCEDURE		FIGURE
1	Front Panel	1.	Net .........................	(A1) x1	13-2
2	Woofer	1.	Screw ....................	(B1) x4	13-3
3	Tweeter	1.	Screw ....................	(C1) x2	13-3

Front Panel

Screwdriver

	Driver should
	be pried away
Speaker Box	from Speaker Box.

Figure 13-2

CD-BA250H/CD-BA2600H

(C1) x 2

ø3 x 10mm

(B1) x 4 ø4 x 12mm

Tweeter

Woofer

Figure 13-3

– 13 –

CD-BA250H/CD-BA2600H

REMOVING AND REINSTALLING THE MAIN PARTS

TAPE MECHANISM SECTION

Perform steps 1 to 6 and 8 of the disassembly method to remove the tape mechanism.

How to remove the record/playback and erase heads (TAPE 2) (See Fig. 14-1)

1.When you remove the screws (A1) x 2 pcs., the recording/ playback head and three-dimensional head of the erasing head can be removed.

How to remove the playback head (TAPE 1) (See Fig. 14-2)

1.When you remove the screws (B1) x 2 pcs., the playback head.

How to remove the pinch roller (TAPE 1/2) (See Fig. 14-3)

1.Carefully bend the pinch roller pawl in the direction of the arrow <A>, and remove the pinch roller (C1) x 1 pc., in the direction of the arrow <B>.

Note:

When installing the pinch roller, pay attention to the spring mounting position.

How to remove the belt (TAPE 2) (See Fig. 14-4)

1.Remove the main belt (D1) x 1 pc., from the motor side.

2.Remove the FF/REW belt (D2) x 1 pc.

TAPE 2

Clutch Ass'y

Record/Playback

Head

Erase Head

(A1) x 2 Ø2 x 9mm

Figure 14-1

TAPE 1

Clutch Ass'y

Playback

Head

(B1) x 2 Ø2 x 9mm

Figure 14-2

How to remove the belt (TAPE 1) (See Fig. 14-4)

1.Remove the main belt (E1) x 1 pc., from the motor side.

2.Remove the FF/REW belt (E2) x 1 pc.

How to remove the motor (See Fig. 14-5)

1. Remove the screws (F1) x 2 pcs., to remove the motor.

Motor			Pinch
	Pinch Roller		Roller
			<A> Pawl
	(C1) x 1
		Pull
		<B>
		Figure 14-3
Clutch Ass'y			Motor
TAPE 2	FF/REW	Motor		TAPE 1
	Belt		TAPE 2	Main Belt
	(D2) x 1			(E1) x 1
			Main Belt
			(D1) x 1
(F1) x 2
Ø2.6 x 5 mm
				TAPE 1
	Main Belt			FF/REW
	(D1) x 1			Belt
		Main Belt		(E2) x 1
		(E1) x 1
Figure 14-5		Figure 14-4

– 14 –

CD MECHANISM SECTION

Perform steps 1, 2, 3, 10, 11, 12 and 13 of the disassembly method to remove the CD mechanism.

How to remove the loading motor (See Fig. 15-1)

1.Bend the hooks (A1) x 5 pcs., to remove the loading motor.

2.Remove the drive belt (A2) x 1pc.

CD-BA250H/CD-BA2600H

Loading

Motor PWB

	Slide	Loading
	Chassis
		Motor
		(A1) x 1
		(A1) x 2
		(A1) x 2
		Loading
		Pulley Motor
		Drive Belt
		(A2) x 1
		Figure 15-1

How to remove the pickup (See Fig. 15-2)

1.Remove the stop washer (B1) x 1 pc., to remove the gear (B2) x 1 pc.

2.Remove the screws (B3) x 2 pcs., to remove the shaft (B4).

3.Remove the pickup.

Note

After removing the connector for the optical pickup from the connector wrap the conductive aluminium foil around the front end of connector so as to protect the optical pickup from electrostatic damage.

(B3) x 2	Stop Washer
ø2.6 x 6mm (B1) x 1

Pickup

	Shaft	CD Mechanism
		Gear
	(B4) x 1
		(B2) x 1
		Figure 15-2

ADJUSTMENT

MECHANISM SECTION

• Driving Force Check

Torque Meter	Specified Value
Play: TW-2111	Tape 1: Over 80 g
	Tape 2: Over 80 g

• Torque Check

Torque Meter	Specified Value
	Tape 1	Tape 2
Play: TW-2111	30 to 80 g.cm	30 to 80 g.cm
Fast forward: TW-2231	—	70 to 180 g.cm
Rewind: TW-2231	—	70 to 180 g.cm

• Tape Speed

	Test Tape	Adjusting	Specified	Instrument
		Point	Value	Connection
Normal	MTT-111	Variable	3,000 ± 30 Hz	Speaker
speed		Resistor in		Terminal
		motor.		(Load
				resistance:
				6 ohms)

TAPE MECHANISM

Tape

Motor

Variable Resistor in motor

Figure 15-3

– 15 –

CD-BA250H/CD-BA2600H

TUNER SECTION

fL: Low-range frequency fH: High-range frequency

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Test Stage	Frequency	Frequency	Setting/	Instrument
		Display	Adjusting	Connection
			Parts
AM IF	450 kHz	1,620 kHz	T351	*1
AM Band	—	522 kHz	(fL): T306	*2
Coverage			1.1 ± 0.1 V
AM Tracking	990 kHz	990 kHz	(fL): T303	*1

• FM

Notes:

1:Description of the "FM IF Adjustment" is not carried on this Manual. It is because the IF coil in the FM front end section has been best adjusted in the factory so that its further adjustment is not needed at the field. When replacing the FM front end assembly, no adjustment is needed either.

2:The parts in the FM front end section are prepared in a complete unit, so you can't obtain each part individually.

*1. Input: Antenna	Output: TP302
			MAIN PWB
*2. Input: Antenna	Output: TP301
	SO302		CNP302
	FM		AM LOOP
	ANTENNA		ANTENNA

FE301	T303 AM
	TRACKING fL
R336	AM BAND
	COVERAGE fL
TP301	T306

T351

AM IF

TP302

R357

Figure 16-1 ADJUSTMENT POINTS

CD SECTION

•Adjustment

Since this CD system incorporates the following automatic adjustment functions, readjustment is not needed when replacing the pickup. Therefore, different PWBs and pickups can be combined freely.

Each time a disc is changed, these adjustments are performed automatically. Therefore, playback of each disc can be performed under optimum conditions.

Items adjusted automatically

(1)Offset adjustment (The offset voltage between the head amplifier output and the VREF reference voltage is compensated inside the IC.)

*Focus offset adjustment

*Tracking offset adjustment

(2)Tracking balance adjustment (waveform drawing Fig.16-2 EFBL)

(3)Gain adjustment (The gain is compensated inside the IC so that the loop gain at the gain crossover frequency will be 0 dB.)

*Focus gain adjustment

*Tracking gain adjustment

CD ERROR CODE DESCRIPTION

Error	State Code
	[Servo System Error]
0001	Cannot detect Pickup-in SW
0002	DSP access error
	[Error during close operation]
0101	Open/Close SW not functioning (Low →		High)
0103	Open/Close SW not functioning (High →		Low)
	[Error during open operation]
0201	Open/Close SW not functioning (Low →		High)
0203	Open/Close SW not functioning (High →		Low)
	[Error during skip operation]
0302	Pickup-in SW is not detected
0306	During Disc 1 search, Open/Close SW or Clamp SW
	or Disc SW do not change to low.
0307	Clamp SW not function (Low →	High)
0308	Clamp SW not function (High →	Low)

	Stopped		T						1999/04/05	20:26:47
	CH1=500 mV			CH2=200 mV		CH3=1 V			500 ms/div
	DC	10:1		DC	10:1	DC 10:1			(500 ms/div)
									NORM:20 kS/s
T	FDO
1
3	TE
	EFBL
2
										CH2
										v/DIV
										200 mV
	=Filter=			=Offset=		=Record Length=			=Trigger=
Smoothing : ON			CH1 :		0.000 V	Main :	100 K	Mode : SINGLE
BW	: FULL		CH2 :		0.000 V	Zoom :	2 k	Type	: EDGE CH1
			CH3 :		0.00 V			Delay :		0.0 ns
			CH4 :		0.00 V			Hold off :		0.2 s
					Figure 16-2

– 16 –

CD-BA250H/CD-BA2600H

TEST MODE

• Setting the test mode

Any one of test mode can be set by pressing several keys as follows. <X-BASS> + <CD> + <POWER> TEST:CD operation test.

Function:-CD test mode. -Enter test mode.

C D T E S T

IL isn't done.

OPEN/CLOSE operation is using manual.

<<>>, <<>> buttons make pick's slide possible.

<<PLAY>> key input.

<<MEMORY>> key input.

Adjustment result automatically will display as below for each 2 sec :

a)"FOFF_XX"

b)"TOFF_XX"

c)"TBAL_XX"

d)"TGAN_XX"

f)"FGAN_XX"

g)"RFLS_XX"

Do TOC IL. Do normal play. When these following key is input into PLAY key, track number can be appoint directly.

<< 1>> key: Track 4
<<	2>> key: Track 9
<<	3>> key: Track 15

explanation:
a)	Focus off set.	="FOFF_XX"
b)	Tracking off set.	="TOFF_XX"
c)	Tracking balance.	="TBAL_XX"
d)	Tracking gain.	="TGAN_XX"
f)	Focus Gain.	="FGAN_XX"
g)	RF level shift.	="RFLS_XX"

VOL — Last memory.

BAL — CENTER

P.GEQ — FLAT

X-BASS — OFF

<<STOP>> key input.

STOP

XX: Hex value.

To cancel : Power OFF

<<MEMORY>> key input.

Laser ON.

<<MEMORY>> key input.

Tracking OFF play at that specific point.

<<MEMORY>> key input.

Tracking ON play from that specific point.

Adjustment result automatically will display as below.

for each 2 sec :

a)"FOFF_XX"

b)"TOFF_XX"

c)"TBAL_XX"

d)"TGAN_XX"

f)"FGAN_XX"

g)"RFLS_XX"

<<STOP>> key input.

STOP

Sliding the PICKUP with <<>>, <<>> button

must only be in STOP mode.

– 17 –

CD-BA250H/CD-BA2600H

Standard Specification of Stereo System Error Message Display Contents

	Error Contents	DISPLAY	Notes
Output while Device Protection Operation.		'PROTECT'	00: While in Protect Circuit Operate.
			01: Over Current Detection.
			02: DC Detection.
			03:
TAPE	Mechanism Error.	'ER-TA**'	00: Tape Mechanism Error.
			01: Initial Error.
			02:
			03:
CD/VCD	Pickup Mechanism Error.	'ER-CD**'	00: Pickup Mechanism Error.
			01: PU-IN SW Detection NG.
			02:
			03:
			04:
	CD Changer Mechanism Error.	'ER-CD**'	10: Changer Error.
			11: Initial Error.
			12:
			13:
	Tray Error.	'ET-CD**'	20: Tray Error.
			21:
			22:
			23:
	Focus Not Match.	'NO DISC'
	IL Time Over.	'NOT READ'
TUN	PLL Unlock.	'ER-TU**'	00: TUN Error.
			01: PLL Unlock.
			02:
			03:

– 18 –